| UMC | unidimensional chromatography; university medical center |
|---|---|
| UPSIT | University of Pennsylvania Smell Identification Test |
| ACP | accessory conduction pathway; acid phosphatase; acyl carrier protein; American College of Pathologis... |
| AMA | against medical advice; alkaline membrane assay; American Management Association; American Medical A... |
| ANA | acetylneuraminic acid; American Narcolepsy Association; American Neurological Association; American ... |